Alert archive / Mississippi / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 27, NWS Jackson, MS

January 29, 2001Clarke County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 29, 2001, 1:18 PM CST for Clarke County, Mississippi. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jan 29, 2001, 1:18 PM CST (19:18 UTC)
Expired: Jan 29, 2001, 2:15 PM CST
In force: 57 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Clarke County, MS

What was reported inside it

Time	Report	Where	Remark
Jan 29, 1:25 PM CST	Thunderstorm Wind	Pachuta, MS	Several trees were blown down, including one that blocked a lane of interstate 20.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 29, 11:30 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.3 hours before the alert went out and 140 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 9 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 723 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 301 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KJAN 291919
SVRJAN
MSC023-292015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
118 PM CST MON JAN 29 2001

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLARKE COUNTY IN EAST CENTRAL MISSISSIPPI

* UNTIL 215 PM CST

* AT 118 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 11 MILES NORTHWEST OF            
  STONEWALL TO 24 MILES SOUTHWEST OF QUITMAN...MOVING EAST AT 60 MPH.

* SEVERE THUNDERSTORMS WILL...
  BE NEAR STONEWALL AT 130 PM CST
  BE NEAR QUITMAN AT 135 PM CST

DAMAGING WINDS CAN BE EXPECTED. GO TO A SAFE PLACE NOW AND REMAIN
PROTECTED UNTIL THE STORM HAS PASSED.

74

LAT...LON 3222 8844 3222 8890 3184 8890 3185 8861
          3190 8847

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jan 29, 4:58 AM CST, 8 hours 20 minutes earlier.

Area forecast discussion, Jan 29, 4:58 AM CST, 8 hours 20 minutes before

AREA FORECAST DISCUSSION...CORRECTION FOR WIND ADVYS
NATIONAL WEATHER SERVICE JACKSON MS
345 AM CST MON JAN 29 2001

WINDY...WARM...TSRA...THEN COOLER IN THE FIRST 12-18 HOURS OF THE
FORECAST. AVN/06Z MESO ETA PACKED WITH GRADIENT FLOW...ABOVE NORMAL
TEMPS...POTENTIAL SEVERE SQUALL LINE AND THEN COLD FRONTAL PASSAGE
AS A DEEPENING SURFACE LOW IN WRN AR HEADS INTO NERN MO. BOTH OF
THESE MODELS REACH BOMBING LOW STATUS WITH 12-14MB DROPS IN A 12 HR.
PERIOD ENDING AT 00-03Z TONIGHT. WIND ADVISORY CRITERIA PROBABLY
WILL BE MET MOST OF CWFA BY EARLY AFTERNOON...PROFILERS ALREADY
30-50KTS IN THE LOWEST 4 GATES AT OKOLONA AND WINFIELD.

UNSEASONABLY WARM CURRENT TEMPERATURES ABOVE EVERY MODEL CURVE AT
THE MOMENT BUT WILL GENERALLY RAISE NGM MOS BY A CATEGORY SINCE IT
HANDLES WARM ADVECTION BETTER THAN OTHERS(EVEN 06Z MESO ETA TOO COOL
WITH IT'S 3 HR PROG 2M TEMPS). SQUALL LINE FORMING IN E TX BEING
HANDLED BEST BY 06Z RUC/MESOETA AND THESE ARE ABOUT 2-4 HOURS SLOWER
WITH THE EWD PROGRESSION THAN THE 00Z RUNS. THOSE FEW HOURS COULD BE
CRITICAL FOR DESTABILIZATION AND AN 18Z RUC SOUNDING FOR CENTRAL AND
SRN MS MODIFIED FOR 73/65 YIELDED THE FOLLOWING: CAPES 1500-1700J/KG
...STORM RELATIVE HELICITIES 500-700...LIFTED INDICES -5...AND LFC
NEAR 2K FEET.

THERE IS EXCELLENT AGREEMENT WITH MAIN SHORT TERM MODELS WITH THE
PRIMARY FORCING AT 18Z ALONG MS RIVER...FEATURING 850MB S-N FLOW
60-65KTS WITH THETA E VALUES SURGING TO 326-328K...500MB JET STREAK
95-105KT AT KAEX WHICH CROSSES KMEI AT 23Z...300MB JET MAX 140-145KT
MOVING FROM SE TX AT 18Z TO W CENTRAL MS AT 00Z. THE 06Z MESO-ETA
BRINGS 65+F SURFACE DEWPOINTS UP TO I-20 AXIS ALSO AT 18Z. FARTHER N
...ENVIRONMENTAL/STORM RELATIVE SHEAR OVERWHELMS THE AMOUNT OF
INSTABILITY AVAILABLE N OF ABOUT A WINNSBORO TO JACKSON TO MACON
LINE SO SEVERE REPORTS SHOULD BE LESS COMMON IN THOSE AREAS. BACK TO
THE SOUTH HOWEVER...THE SQUALL LINE WILL HAVE MUCH MORE BOWING AND
THE POTENTIAL FOR EMBEDDED SUPERCELLS. WILL ENHANCE THE SEVERE
WORDING FOR WIND DAMAGE SERN THIRD OF CWFA. FINALLY...PRECIPITABLE
WATER WILL BE FEEDING AROUND 1.5 INCHES INTO THE LINE.

ONCE THE LINE EXITS INTO AL BY ABOUT 02Z...WLY LOW LEVEL FLOW SHOULD
RETURN MOST LOCATIONS CLOSE TO NORMAL TEMPERATURES FOR TUESDAY.
A SHALLOW LAYER OF LOW LEVEL MOISTURE COULD PERSIST ON TUESDAY WITH
PARTLY CLOUDY SKIES BEFORE HIGH LEVEL MOISTURE BEGINS INVADING AGAIN
TUESDAY NIGHT THROUGH WEDNESDAY.

24 HR QPF DISCUSSION: MODELS ARE IN EXCELLENT AGREEMENT WITH TIMING
OF EXPECTED SQUALL LINE...WITH NGM TYPICALLY UNDERDONE ON AMOUNTS.
EXPECT WIDESPREAD ONE TO TWO INCH RAIN TOTALS...WITH THE VAST
MAJORITY FALLING IN A ONE TO TWO HOUR TIMEFRAME IN ANY GIVEN PLACE
AS THE SQUALL LINE PASSES. LINE SHOULD ENTER THE WESTERN CWFA LATE
THIS MORNING...CROSS THE MS RIVER AROUND NOON...AND EXIT EASTERN MS
ABOUT 6 PM.

EXTENDED DISCUSSION...CURSORY LOOK AT THE MEDIUM RANGE MODELS
BRINGS ANOTHER UPPER TROUGH THROUGH THE LOWER MS VALLEY THURSDAY
WITH MUCH LESS MOISTURE TO WORK WITH. UKMO..ECMWF...AND MRF BRING
A PACIFIC AIRMASS ACROSS THE DEEP SOUTH FRIDAY AND SATURDAY BEFORE
NEXT UPPER TROUGH DROPS INTO THE MEAN TROUGH AXIS IN THE CENTRAL
CONUS LATER IN THE WEEKEND. DO NOT SEE ANY CHANGES TO THE EXTENDED.

PRELIM NUMBERS:
JAN 73/44/66/43/65 +3-00
MEI 74/45/65/42/66 98-00

.JAN...
MS...WIND ADVY FOR AREA LAKES TODAY MOST ZONES.
LA...WIND ADVY FOR AREA LAKES TODAY NERN LA ZONES.
AR...WIND ADVY FOR AREA LAKES TODAY SERN AR ZONES.

In the hours before

Special weather statement, Jan 29, 10:20 AM CST, 2 hours 58 minutes before

LAZ007>009-015-016-023>026-MSZ040>044-047>050-053>055-059>063-291715-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1020 AM CST MON JAN 29 2001

SEVERE THUNDERSTORM WATCH NUMBER 10 HAS BEEN CANCELED FOR ALL
PARISHES IN NORTHEAST LOUISIANA AND FOR ADAMS COUNTY IN MISSISSIPPI.

SEVERE THUNDERSTORM WATCH NUMBER 10 REMAINS IN EFFECT UNTIL 2 PM
CST FOR THE FOLLOWING COUNTIES IN MISSISSIPPI...

WARREN...RANKIN...LEAKE...SIMPSON...ISSAQUENA...HINDS...MADISON...
SCOTT...COPIAH...YAZOO...SHARKEY...LINCOLN...JEFFERSON...LAWRENCE
AND CLAIBORNE

Local storm report, Jan 29, 10:32 AM CST, 2 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1032 AM CST MON JAN 29 2001

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0952 AM    ST JOSEPH                 LA   WIND DAMAGE
01/29/01   TENSAS                         ROOF BLOWN OFF OF
                                          OUTBUILDING

1010 AM    3 E VICKSBURG             MS   WIND DAMAGE
01/29/01   WARREN                         TREES DOWN AT INTERSECTION
                                          OF HIGHWAY 27 AND
                                          INTERSTATE 20

Local storm report, Jan 29, 11:09 AM CST, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1109 AM CST MON JAN 29 2001

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

1040 AM    4 SW RAYMOND              MS   WIND DAMAGE
01/29/01   HINDS                          LARGE TREE LIMBS DOWN
                                          BLOCKING SOME SECONDARY
                                    8      ROADS.  REPORTED BY EOC.

Local storm report, Jan 29, 12:38 PM CST, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1238 PM CST MON JAN 29 2001

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

1130 AM    BROOKHAVEN                MS   WIND DAMAGE
01/29/01   LINCOLN                        SHERIFFS OFFICE REPORTED
                                          TREES AND POWER LINES DOWN

1141 AM    BRANDON                   MS   WIND DAMAGE
01/29/01   RANKIN                         FIRE DEPARTMENT REPORTED
                                          TREES...POWER LINES AND
                                          ROAD SIGNS DOWN

f

Local storm report, Jan 29, 12:44 PM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1244 PM CST MON JAN 29 2001

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

1225 PM    2 S PRENTISS              MS   WIND DAMAGE
01/29/01   JEFFERSON DAVIS                HATTIESBURG HIGHWAY PATROL
                                          REPORTE TREES DOWN ALONG
                                          HWY 13

1230 PM    FOREST                    MS   WIND DAMAGE
01/29/01   SCOTT                          SHERIFFS OFFICE REPORTED
                                          TREES DOWN

Special weather statement, Jan 29, 12:59 PM CST, 19 minutes before

MSZ028>033-037>039-043>046-049>052-054>058-062>066-072>074-292200-

SPECIAL WEATHER STATEMENT...CORRECTION FOR WORDING
NATIONAL WEATHER SERVICE JACKSON MS
1259 PM CST MON JAN 29 2001

THE NATIONAL WEATHER SERVICE IN JACKSON HAS CANCELED A PORTION OF
SEVERE THUNDERSTORM WATCH 11. COUNTIES CANCELED INCLUDE:

IN NORTH MISSISSIPPI:
MONTGOMERY...

IN CENTRAL MISSISSIPPI:
ATTALA...MADISON MS...LEAKE...RANKIN...SCOTT...COPIAH...SIMPSON...
SMITH...

IN SOUTH MISSISSIPPI:
LINCOLN...LAWRENCE...JEFFERSON DAVIS...

THIS INCLUDES THE CITIES OF...BRANDON...BROOKHAVEN...CANTON...
CARTHAGE...FOREST...HAZLEHURST...KOSCIUSKO...MENDENHALL...
MONTICELLO...PRENTISS...RALEIGH...WINONA...

SEVERE THUNDERSTORM WATCH 11 REMAINS VALID UNTIL 400 PM CST MONDAY
FOR THE FOLLOWING COUNTIES:

IN NORTH MISSISSIPPI:
WEBSTER...CLAY...LOWNDES...CHOCTAW...OKTIBBEHA...

IN CENTRAL MISSISSIPPI:
WINSTON...NOXUBEE...NESHOBA...KEMPER...NEWTON...LAUDERDALE...
JASPER...CLARKE...

IN SOUTH MISSISSIPPI:
COVINGTON...JONES...MARION...LAMAR...FORREST...

THIS INCLUDES THE CITIES OF...ACKERMAN...BAY SPRINGS...COLLINS...
COLUMBIA...COLUMBUS...DE KALB...DECATUR...EUPORA...HATTIESBURG...
LAUREL...LOUISVILLE...MACON...MERIDIAN...PHILADELPHIA...PURVIS...
QUITMAN...STARKVILLE...WEST POINT...

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 29, 10:01 AM CST	Severe Thunderstorm Warning	JAN	Claiborne, Warren	29 min
Jan 29, 10:23 AM CST	Severe Thunderstorm Warning	JAN	Hinds	37 min
Jan 29, 10:49 AM CST	Severe Thunderstorm Warning	JAN	Madison	41 min
Jan 29, 10:57 AM CST	Severe Thunderstorm Warning	JAN	Hinds	33 min
Jan 29, 11:05 AM CST	Severe Thunderstorm Warning	JAN	Yazoo	40 min
Jan 29, 11:11 AM CST	Severe Thunderstorm Warning	JAN	Rankin	49 min
Jan 29, 11:25 AM CST	Severe Thunderstorm Warning	JAN	Madison	50 min
Jan 29, 11:56 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	64 min
Jan 29, 11:59 AM CST	Severe Thunderstorm Warning	JAN	Leake, Scott	46 min
Jan 29, 12:11 PM CST	Severe Thunderstorm Warning	JAN	Smith	49 min
Jan 29, 12:14 PM CST	Severe Thunderstorm Warning	JAN	Marion	46 min
Jan 29, 12:28 PM CST	Severe Thunderstorm Warning	JAN	Covington	47 min
Jan 29, 12:32 PM CST	Severe Thunderstorm Warning	JAN	Neshoba, Newton	43 min
Jan 29, 12:44 PM CST	Severe Thunderstorm Warning	JAN	Lamar	46 min
Jan 29, 12:51 PM CST	Severe Thunderstorm Warning	JAN	Jasper, Jones	39 min
Jan 29, 1:05 PM CST	Severe Thunderstorm Warning	JAN	Forrest	40 min
Jan 29, 1:12 PM CST	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	63 min
Jan 29, 1:30 PM CST	Severe Thunderstorm Warning	JAN	Jasper, Jones	15 min
Jan 29, 1:45 PM CST	Severe Thunderstorm Warning	JAN	Forrest	15 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.